Borrowing Arrangements (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013
Borrowing Arrangements (Additional Textual) [Abstract]
Line of credit available for general working capital needs	$ 5.0
Letter of credit sub-facility	5.0
Foreign exchange sub-facility	2.0
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%