Debt, Capital Leases and Notes Payable, Line of Credit Facility (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Jun. 30, 2014	Dec. 31, 2014
Line of Credit Facility [Line Items]
Total borrowing availability	$ 35,000
Debt to EBITDA ratio	3.00
Debt to EBITDA ratio after declining	2.75
Consolidated debt to EBITDA ratio	1.79
Financial covenants minimum tangible net worth requirement	11,109	11,000
Percentage of consolidated income considered for financial covenant (in hundredths)	50.00%
EBITDA to fixed charge ratio	1.23
EBITDA to fixed charge ratio increase in period one	1.00
Financial covenants tangible net worth requirement	13,121
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Total borrowing availability	15,000
Expiration date	Jun. 20, 2019
Commitment fee percentage (in hundredths)	0.50%
Outstanding borrowings	4,700
Weighted-average interest rate (in hundredths)	4.51%
Remaining borrowing availability	10,300
Deferred loan costs capitalized	214
Accumulated amortization of deferred loans costs	32		21
Revolving Credit Facility [Member] | Federal Funds [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate (in hundredths)	0.50%
Revolving Credit Facility [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Description of variable rate basis	LIBOR for a three-month
Basis spread on variable rate (in hundredths)	1.00%
Revolving Credit Facility [Member] | LIBOR [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Description of variable rate basis	a one-, two-, three- or six-month LIBOR rate
Basis spread on variable rate (in hundredths)	4.25%
Revolving Credit Facility [Member] | Base Rate [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate (in hundredths)	3.25%
Prior Senior Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Total borrowing availability	20,000
Prior Term Loans [Member]
Line of Credit Facility [Line Items]
Total borrowing availability	$ 23,150