Accounting for Stock-Based Compensation - Summary of Outstanding Stock Options (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Outstanding at beginning of period, Shares			3,002,980	3,636,480
Granted, Shares	0	0
Exercised, Shares
Forfeited and expired, Shares			(500)	(625,000)
Outstanding at end of period, Shares	3,002,480	3,011,480	3,002,480	3,011,480
Options exercisable at end of period, Shares	3,002,480	3,011,480	3,002,480	3,011,480
Outstanding at beginning of period, Weighted Average Exercise Price			$ 1.50	$ 1.55
Granted, Weighted Average Exercise Price
Exercised, Weighted Average Exercise Price
Forfeited and expired, Weighted Average Exercise Price			$ 5.00	$ 1.75
Outstanding at end of period, Weighted Average Exercise Price	$ 1.50	$ 1.51	$ 1.50	$ 1.51
Options exercisable at end of period, Weighted Average Exercise Price	$ 1.50	$ 1.51	$ 1.50	$ 1.51