Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended			12 Months Ended
	Jan. 31, 2017	Mar. 31, 2017	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2016
Income Tax Disclosure [Line Items]
Income tax expense (benefit)		$ (235)		$ (1,291)
Statutory rate		34.00%		34.00%
Deferred tax assets, net of deferred tax liabilities		$ 5,400			$ 4,500
Adjustments of deferred tax valuation allowance		200	$ 7,600		12,600
Deferred tax assets, valuation allowance		$ 13,500			13,300
Domestic deferred tax assets ratable reversal pattern period		15 years
Operating loss carry forward, expiration period		The carry forward rules allow for up to a 20 year carry forward of net operating losses
Net operating loss carry forward period		20 years
Average period required to utilize future income		27 years
Additional adjustment to the valuation allowance					5,000
Gross unrecognized tax benefit		$ 700			$ 900
Research Tax Credit Carryforward [Member]
Income Tax Disclosure [Line Items]
Tax benefit related to previously unrecognized tax benefits		100
ASU No. 2016-09 [Member]
Income Tax Disclosure [Line Items]
Income tax deficiencies with restricted stock and stock options		100
Increase to deferred tax assets to account for tax benefits and forfeitures	$ 700
Adjustments of deferred tax valuation allowance		200
Deferred tax assets, valuation allowance		$ 100