Fair Value Measurements - Quantitative Information about Level 3 Fair Value Measures (Detail) (Contingent Consideration [Member], Level 3 [Member], USD $)	3 Months Ended
	Mar. 31, 2014
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value	$ 685,000
Monte Carlo Analysis [Member] | Minimum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Forecasted annual EBITDA	300,000
Weighted average cost of capital	15.00%
U.S. Treasury yields	0.10%
Monte Carlo Analysis [Member] | Maximum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Forecasted annual EBITDA	$ 600,000
Weighted average cost of capital	15.00%
U.S. Treasury yields	1.20%
Discounted Cash Flow [Member] | Minimum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
U.S. Treasury yields	0.10%
Credit spread	1.00%
Discounted Cash Flow [Member] | Maximum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
U.S. Treasury yields	1.20%
Credit spread	1.70%