Debt - Additional Information 1 (Detail) (USD $)			12 Months Ended		0 Months Ended		12 Months Ended	0 Months Ended	12 Months Ended	0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Term Loan Subtranche One [Member]	Dec. 31, 2013 Term loan Subtranche Two [Member]	Feb. 25, 2014 Subsequent Event [Member] Term Loan One [Member]	Feb. 25, 2014 Subsequent Event [Member] Term Loan Subtranche One [Member]	Dec. 31, 2013 Subsequent Event [Member] Term Loan Subtranche One [Member]	Feb. 25, 2014 Subsequent Event [Member] Term loan Subtranche Two [Member]	Dec. 31, 2013 Subsequent Event [Member] Term loan Subtranche Two [Member]	Feb. 25, 2014 Subsequent Event [Member] Minimum [Member] Term Loan One [Member] LIBOR [Member]	Feb. 25, 2014 Subsequent Event [Member] Minimum [Member] Term Loan One [Member] Base Rate [Member]	Feb. 25, 2014 Subsequent Event [Member] Minimum [Member] Term Loan Subtranche One [Member] LIBOR [Member]	Feb. 25, 2014 Subsequent Event [Member] Minimum [Member] Term Loan Subtranche One [Member] Base Rate [Member]	Feb. 25, 2014 Subsequent Event [Member] Minimum [Member] Term loan Subtranche Two [Member] LIBOR [Member]	Feb. 25, 2014 Subsequent Event [Member] Minimum [Member] Term loan Subtranche Two [Member] Base Rate [Member]	Feb. 25, 2014 Subsequent Event [Member] Maximum [Member] Term Loan One [Member] LIBOR [Member]	Feb. 25, 2014 Subsequent Event [Member] Maximum [Member] Term Loan One [Member] Base Rate [Member]	Feb. 25, 2014 Subsequent Event [Member] Maximum [Member] Term Loan Subtranche One [Member] LIBOR [Member]	Feb. 25, 2014 Subsequent Event [Member] Maximum [Member] Term Loan Subtranche One [Member] Base Rate [Member]	Feb. 25, 2014 Subsequent Event [Member] Maximum [Member] Term loan Subtranche Two [Member] LIBOR [Member]	Feb. 25, 2014 Subsequent Event [Member] Maximum [Member] Term loan Subtranche Two [Member] Base Rate [Member]
Debt Instrument [Line Items]
Credit facility, description of loan					An $87.5 million five-year term loan, interest at a floating rate equal to, at the Company’s option, either: (1) reserve adjusted LIBOR, plus a spread that ranges from 250 to 300 basis points, depending on the Company’s cash flow leverage ratio; or (2) Alternate Base Rate, plus a spread that ranges from 150 to 200 basis points, depending on the Company’s cash flow leverage ratio. Principal amortizes $4.4 million in 2014, $4.4 million in 2015, $6.6 million in 2016, $8.8 million in 2017, and $8.8 million in 2018 with the remaining principal due at the end of the term;	A $60.0 million term loan maturing on February 25, 2017, interest at a floating rate equal to, at the Company’s option, either: (1) reserve adjusted LIBOR, plus a spread that ranges from 200 to 250 basis points, depending on the Company’s cash flow leverage ratio; or (2) Alternate Base Rate, plus a spread that ranges from 100 to 150 basis points, depending on the Company’s cash flow leverage ratio. Principal amortizes $3.0 million in 2014, $3.0 million in 2015, and $4.5 million in 2016 with the remaining principal due at the end of the term;		A $6.3 million term loan maturing on November 3, 2017, interest at a floating rate equal to, at the Company’s option, either: (1) reserve adjusted LIBOR, plus a spread that ranges from 250 to 300 basis points, depending on the Company’s cash flow leverage ratio; or (2) Alternate Base Rate, plus a spread that ranges from 150 to 200 basis points, depending on the Company’s cash flow leverage ratio. Principal amortizes $0.4 million in 2014, $0.5 million in 2015, $0.6 million in 2016 and $0.5 million in 2017 with the remaining principal due at the end of the term;
Debt instrument, term					5 years
Term loan facility	$ 140,625,000	$ 148,125,000			$ 87,500,000	$ 60,000,000		$ 6,300,000
Basis spread on variable rate										2.50%	1.50%	2.00%	1.00%	2.50%	1.50%	3.00%	2.00%	2.50%	1.50%	3.00%	2.00%
Principal amount amortized, 2014					4,400,000	3,000,000		400,000
Principal amount amortized, 2015					4,400,000	3,000,000		500,000
Principal amount amortized, 2016					6,600,000	4,500,000		600,000
Principal amount amortized, 2017					8,800,000			500,000
Principal amount amortized, 2018					$ 8,800,000
Line of credit facility expiry date			Feb. 28, 2017	Nov. 03, 2017		Feb. 25, 2017	Feb. 28, 2017	Nov. 03, 2017	Nov. 03, 2017