Subsequent Events (Detail) - Subsequent Event	Apr. 20, 2017 USD ($) $ / shares shares
Subsequent Event [Line Items]
Proceeds from issuance of warrants	$ 1,500,000
Number of securities called by warrants (in shares) | shares	1,500,000.0
Exercise price of warrants (in dollars per share) | $ / shares	$ 5.00
Treasury stock acquired (in shares) | shares	419,000
Cost per share (in dollars per share) | $ / shares	$ 3.60
Value of treasury stock acquired	$ 1,500,000
New Credit Agreement
Subsequent Event [Line Items]
Debt instrument, face amount	20,000,000.0
Debt Instrument, periodic payment, principal	$ 1,300,000.0
Interest rate, stated percentage	9.486%
New Credit Agreement | LIBOR
Subsequent Event [Line Items]
Credit agreement, basis spread on variable interest rate	7.75%
Credit Agreement
Subsequent Event [Line Items]
Repayments of long-term debt	$ 13,900,000