Stock Compensation - Summary of Activity in Plans (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Shares, Outstanding at beginning of year	948,690
Shares, Granted	5,443
Shares, Exercised	(85,000)
Shares, Forfeited and expired	(290,909)
Shares, Outstanding at end of period	578,224
Shares, Options exercisable at end of period	557,358
Weighted average exercise price, Outstanding at beginning of year	$ 5.44
Weighted average exercise price, Granted	$ 3.91
Weighted average exercise price, Exercised	$ 2.02
Weighted average exercise price, Forfeited and expired	$ 12.24
Weighted average exercise price, Outstanding at end of period	$ 2.51
Weighted average exercise price, Options exercisable at the end of period	$ 2.47
Aggregate intrinsic value, Outstanding at end of period	$ 1,341
Aggregate intrinsic value, Options exercisable at the end of period	$ 1,321