Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Valuation Allowance [Line Items]
Federal statutory rate	35.00%
Decrease in current state income tax expense	$ 200,000
Federal net operating losses to be utilized	343,800,000
Estimated net operating losses to be utilized in preparing the 2012 Federal income tax return	50,400,000
Limited net operating losses under Section 382	6,100,000
Net operating loss carry-forward under Section 382	293,400,000
Deferred tax asset valuation allowance	119,277,000	118,723,000	115,746,000	170,939,000
Deferred tax asset valuation allowance, foreign operations	900,000	700,000
Reduction of deferred income tax assets	19.50%	27.60%
Increase (decrease) in valuation allowance	600,000
Federal income tax at statutory rate	35.00%	35.00%	35.00%
Uncertain income tax positions	0	0
Unrecognized tax benefits	0	0
Foreign operations [Member]
Valuation Allowance [Line Items]
Foreign NOLs available for future years	700,000
Foreign tax credits	$ 500,000
Minimum [Member] | State and Local Jurisdiction [Member]
Valuation Allowance [Line Items]
Unrecognized Tax Benefits, Applicable Statute of Limitations	3 years
Maximum [Member] | State and Local Jurisdiction [Member]
Valuation Allowance [Line Items]
Unrecognized Tax Benefits, Applicable Statute of Limitations	4 years