Graham Corporation Annual report pursuant to Section 13 and 15(d)

Changes in Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Detail)

Changes in Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income/(loss), beginning balance	$ (9,056)	$ (5,765)
Other comprehensive income before reclassifications	(2,405)	(3,623)
Amounts reclassified from accumulated other comprehensive loss	785	332
Total other comprehensive income	(1,620)	(3,291)	$ 2,268
Accumulated other comprehensive income/(loss), ending balance	(10,676)	(9,056)	(5,765)
Pension and Other Postretirement Benefits Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income/(loss), beginning balance	(9,462)	(6,168)
Other comprehensive income before reclassifications	(2,255)	(3,626)
Amounts reclassified from accumulated other comprehensive loss	785	332
Total other comprehensive income	(1,470)	(3,294)
Accumulated other comprehensive income/(loss), ending balance	(10,932)	(9,462)	(6,168)
Foreign Currency Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income/(loss), beginning balance	406	403
Other comprehensive income before reclassifications	(150)	3
Total other comprehensive income	(150)	3
Accumulated other comprehensive income/(loss), ending balance	$ 256	$ 406	$ 403

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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