Credit Facility (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended	0 Months Ended
	Dec. 31, 2014	Nov. 21, 2014
Maturities of current and long-term debt
Long-term Debt, Total	$ 2,625
Amortization of debt issuance costs
2015	178
2016	178
2017	178
2018	158
Amortization of debt issuance costs	692
Revolving Line of Credit
Credit Facility.
Deferred finance costs	711
Amortization and interest expense	34
Amortization period for deferred finance cost	4 years
Revolving Line of Credit | LIBOR
Credit Facility.
Floating interest rate, basis	LIBOR
Revolving Line of Credit | LIBOR | Minimum
Credit Facility.
Spread on floating interest rate (as a percent)	2.50%
Revolving Line of Credit | LIBOR | Maximum
Credit Facility.
Spread on floating interest rate (as a percent)	3.50%
Revolving Line of Credit | Prime Rate
Credit Facility.
Floating interest rate, basis	Prime Rate
Revolving Line of Credit | Prime Rate | Minimum
Credit Facility.
Spread on floating interest rate (as a percent)	1.50%
Revolving Line of Credit | Prime Rate | Maximum
Credit Facility.
Spread on floating interest rate (as a percent)	2.50%
Revolving Line of Credit
Credit Facility.
Maximum borrowing capacity		46,500
Maximum borrowing capacity with an option to increase the available amount upon the satisfaction of certain conditions		86,500
Outstanding balance	0
Revolving Line of Credit | Minimum
Credit Facility.
Fee on unused portion of Revolving Line of Credit(as a percent)		0.375%
Revolving Line of Credit | Maximum
Credit Facility.
Fee on unused portion of Revolving Line of Credit(as a percent)		0.50%
Term Loan
Credit Facility.
Maximum borrowing capacity		3,500
Amortization period for interest and principal		4 years
Outstanding balance	3,500
Interest rate percentage	2.70%
Maturities of current and long-term debt
2015	875
2016	875
2017	875
2018	875
Long-term Debt, Total	3,500
Subsequent Event | Revolving Line of Credit
Credit Facility.
Outstanding balance	$ 5,000