Fair Value Measurements - Quantitative Information about Level 3 Fair Value Measures (Detail) (USD $)	9 Months Ended
	Sep. 30, 2014
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value	$ 682,000
Monte Carlo Analysis [Member] | Minimum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Forecasted annual EBITDA	400,000
Weighted average cost of capital	14.50%
U.S. Treasury yields	0.20%
Monte Carlo Analysis [Member] | Maximum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Forecasted annual EBITDA	$ 600,000
Weighted average cost of capital	14.50%
U.S. Treasury yields	1.20%
Discounted Cash Flow [Member] | Minimum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
U.S. Treasury yields	0.20%
Credit spread	2.00%
Discounted Cash Flow [Member] | Maximum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
U.S. Treasury yields	1.20%
Credit spread	2.50%