Borrowing Arrangements (Details) (USD $)	Jun. 30, 2013
Borrowing Arrangements (Additional Textual) [Abstract]
Line of credit available for general working capital needs	$ 5,000,000
Letter of credit sub-facility	5,000,000
Foreign exchange sub-facility	2,000,000
Interest rates under the amended agreement variable alternate base rate	1.00%
Fed Funds Rate	0.50%
Daily adjusted one-month LIBOR	1.00%
Amount outstanding on the line of credit	0
Minimum [Member]
Borrowing Arrangements (Additional Textual) [Abstract]
Interest rates under the amended agreement, floating	2.00%
Letter of Credit [Member]
Borrowing Arrangements (Additional Textual) [Abstract]
Line of Credit Facility, Maximum Borrowing Capacity	$ 325,000