Equity and Earnings (Loss) per Share - Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	$ (732)	$ (4)	$ (233)
Other comprehensive income (loss) before reclassifications	(318)	(1,417)	530
Amounts reclassified from accumulated other comprehensive income	550	689	(301)
Net other comprehensive income (loss)	232	(728)	229
Ending Balance	(500)	(732)	(4)
Pension Plan Items [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(244)	(377)	(627)
Other comprehensive income (loss) before reclassifications	(355)	218	179
Amounts reclassified from accumulated other comprehensive income	599	(85)	71
Net other comprehensive income (loss)	244	133	250
Ending Balance	0	(244)	(377)
Post Employment Benefit Items [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(456)	390	429
Other comprehensive income (loss) before reclassifications	47	(1,620)	333
Amounts reclassified from accumulated other comprehensive income	(101)	774	(372)
Net other comprehensive income (loss)	(54)	(846)	(39)
Ending Balance	(510)	(456)	390
Equity Method Investment Translation Adjustment and Post-Employment Benefit Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(32)	(17)	(35)
Other comprehensive income (loss) before reclassifications	(10)	(15)	18
Amounts reclassified from accumulated other comprehensive income	52	0	0
Net other comprehensive income (loss)	42	(15)	18
Ending Balance	$ 10	$ (32)	$ (17)