Stock-Based Compensation Plans - Summary of the Activity for the Company's Stock Option Awards (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, Options, Beginning Balance	1,120	1,237	1,595
Forfeited, Options	(35)	(117)	(358)
Options outstanding, Options, Ending Balance	1,085	1,120	1,237
Options exercisable/vested at December 31, 2015	1,070
Forfeited, Exercise Price	$ 3.04	$ 5.22	$ 3.04
Options outstanding, Weighted Average Exercise Price, Beginning Balance	1.87	2.19	2.38
Forfeited, Weighted Average Exercise Price	3.04	5.22	3.04
Options outstanding, Weighted Average Exercise Price, Ending Balance	1.83	1.87	2.19
Options exercisable/vested at December 31, 2015, Weighted Average Exercise Price	$ 1.84
Options outstanding, Aggregated Intrinsic Value, Ending balance	$ 767
Options exercisable/vested at December 31, 2015, Aggregated Intrinsic Value	$ 753
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Exercise Price, Beginning Balance	$ 1.45	1.45	1.45
Options Outstanding, Exercise Price, Ending Balance	1.45	1.45	1.45
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Exercise Price, Beginning Balance	3.04	8.13	8.13
Options Outstanding, Exercise Price, Ending Balance	$ 3.04	$ 3.04	$ 8.13