Inome Taxes (Income Tax Provision) (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Current:
Federal									$ (7)	$ 97	$ 92
State									588	551	457
Foreign									112	71	1
Total current income tax provision									693	719	550
Deferred:
Federal									1,506	95	2,602
State									(1,095)	(854)	(363)
Foreign									(1,230)	(807)	0
Total deferred tax (benefit) provision									(819)	(1,566)	2,239
Income tax (benefit) provision	$ (178)	$ 30	$ (15)	$ 37	$ (1,498)	$ (557)	$ 423	$ 785	$ (126)	$ (847)	$ 2,789