Notes Payable and Long-Term Debt (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended			0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jul. 12, 2013	Nov. 10, 2009	Sep. 29, 2011
Notes payable and long-term debt
Line of credit advance	$ 7,083	$ 6
Notes issued	50,000
Lenders fees and legal expenses			2,814
Financing costs incurred	2,120	(17)	1,653
Principal repayments which are due quarterly on the last day of each calendar quarter
Total	301,900	247,573	247,186
Outstanding debt balances
Principal amount			250,000
Unamortized discount			(2,814)
Outstanding debt balances
Net debt at the beginning of the period	247,573	247,186
Line of credit advances	7,083	6
Line of credit repayments	(3,006)
Original issue	50,000
Debt discount			(2,814)
Principal payments	(1,250)
Amortization of discount	793	381	348
Net debt at the ending of the period	301,900	247,573	247,186
Less: current portion	(5,000)
Loan outstanding, excluding current portion	289,817	247,567
Deferred Financing Costs
Financing costs incurred	2,120	(17)	1,653
Amortization of deferred financing costs	2,020	1,653	1,498
Payment of financing costs	2,120		1,636
Reversal of financing costs		17
Deferred financing fee activity
Balance at the beginning of the period	7,642	9,312
Amortization of deferred financing costs	(2,020)	(1,653)	(1,498)
Financing fees paid and accrued	2,120	(17)	1,653
Balance at the end of the period	7,742	7,642	9,312
Debt Prepayment Expense
Total debt prepayment expense			295
Colt Finance Corp
Notes payable and long-term debt
Percentage of ownership	100.00%	100.00%			100.00%
Credit Agreement
Notes payable and long-term debt
Maximum borrowing capacity						50,000
Annual servicing fee	40
Number of consecutive days threshold	60 days
Line of credit advance	10,083	6
Principal repayments which are due quarterly on the last day of each calendar quarter
Total	7,083
Outstanding debt balances
Net debt at the beginning of the period	6
Line of credit advances	10,083	6
Line of credit repayments	(3,006)
Net debt at the ending of the period	7,083
Less: current portion	(7,083)
Credit Agreement | Canadian Banker's Acceptance Rate
Notes payable and long-term debt
Variable interest rate base	Canadian Banker's Acceptance Rate
Credit Agreement | Lender's prime rate
Notes payable and long-term debt
Variable interest rate base	Lender's prime rate
Credit Agreement | Minimum
Notes payable and long-term debt
Annual fee on unused available balance payable quarterly (as a percent)	0.375%
Excess availability calculation, trade payables, number of days past due	60 days
Excess availability threshold amount	11,000
Credit Agreement | Maximum
Notes payable and long-term debt
Annual fee on unused available balance payable quarterly (as a percent)	0.50%
Excess availability, threshold limit	50,000
Term Loan
Notes payable and long-term debt
Notes issued	50,000			50,000
Lenders fees and legal expenses				2,293
Financing costs incurred	2,120			2,120
Principal repayments which are due quarterly on the last day of each calendar quarter
2014	5,000
2015	7,500
2016	36,250
Total	48,750
Number of rolling quarters used in calculation of financial covenants	4
Number of proceeding fiscal quarters used in calculation of financial covenants	3
Outstanding debt balances
Unamortized discount				(2,293)
Outstanding debt balances
Original issue	50,000			50,000
Debt discount				(2,293)
Principal payments	(1,250)
Amortization of discount	376	381
Net debt at the ending of the period	48,750
Less: current portion	(5,000)
Loan outstanding, excluding current portion	41,833
Deferred Financing Costs
Financing costs incurred	2,120			2,120
Deferred financing fee activity
Financing fees paid and accrued	2,120			2,120
Term Loan | 3-month LIBOR
Notes payable and long-term debt
Variable interest rate base	3-month LIBOR
Basis spread on variable rate (as a percent)	9.75%
Term Loan | Base rate
Notes payable and long-term debt
Alternative reference rate if greater than 3-month LIBOR	1.00%
Letters of credit facility
Notes payable and long-term debt
Maximum borrowing capacity						20,000
Letters of credit outstanding	3,486	1,715
Senior Notes
Notes payable and long-term debt
Notes issued					250,000
Lenders fees and legal expenses			2,814		3,522
Interest rate (as a percent)					8.75%
Principal repayments required until maturity	0
Principal repayments which are due quarterly on the last day of each calendar quarter
Total	247,984	247,567
Outstanding debt balances
Principal amount			250,000
Unamortized discount			(2,814)		(3,522)
Outstanding debt balances
Net debt at the beginning of the period	247,567	247,186
Original issue					250,000
Debt discount			(2,814)		(3,522)
Amortization of discount	417	381
Net debt at the ending of the period	247,984	247,567
Loan outstanding, excluding current portion	247,984
Senior Notes | Minimum
Notes payable and long-term debt
Aggregate default indebtedness	$ 20,000