Long-Term Debt Payable to Banks (Details Textual) (USD $) In Thousands, unless otherwise specified	1 Months Ended	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2012
Long-Term Debt Payable to Banks (Textual) [Abstract]
Senior credit facility	$ 33,000	$ 33,000
Senior credit facility period		60 months
Term-loan prepayments	10,679
Quarterly principal payments		821
Maturity payment	6,571	6,571
Senior Credit Facility margin		0.50%
Senior Credit Facility Base Rate calculation		Higher of the Prime Rate or the Federal Funds Open Rate plus 0.50%.
Debt tied to LIBOR	10,500	10,500
Debt tied to Prime Rate	179	179
Unused borrowing commitment fee		0.375%
Outstanding borrowings	0	0
Senior Credit Facility blended interest rate	1.50%	1.50%
Outstanding letters of credit	202	202
Fixed charge coverage ratio, Minimum		not less than 1.25 : 1.0
Revolver availability	9,798	9,798
Fixed charge leverage ratio, Maximum		not more than 2.5 : 1.0
One-time capital expenditures		5,500
Years required to enter into an interest rate swap		3 years
Amount required to enter into an interest rate swap		not less than 50% of the term loan for the first two years and 35% of the term loan for the third year
Percentage of term loan to be entered into an interest rate swap during first two years	50.00%	50.00%
Percentage of term loan to be entered into an interest rate swap during third year	35.00%	35.00%
Fixed rate on interest rate swap	3.25%	3.25%
Floating rate period		30 day LIBOR
Revolver [Member]
Long-Term Debt Payable to Banks (Textual) [Abstract]
Senior credit facility	10,000	10,000
Senior Credit Facility [Member]
Long-Term Debt Payable to Banks (Textual) [Abstract]
Senior credit facility	$ 23,000	$ 23,000
Maximum [Member]
Long-Term Debt Payable to Banks (Textual) [Abstract]
Applicable margins for Base Rate based borrowings		0.75%
Applicable margins for LIBOR-based borrowings		2.25%
Minimum [Member]
Long-Term Debt Payable to Banks (Textual) [Abstract]
Applicable margins for Base Rate based borrowings		0.00%
Applicable margins for LIBOR-based borrowings		1.25%