Pension Plan (Details) - Pension plan assets by level within the fair value hierarchy (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2013 Guaranteed. Investment Contracts [Member] Fair Value, Inputs, Level 1 [Member]	Jun. 30, 2013 Guaranteed. Investment Contracts [Member] Fair Value, Inputs, Level 2 [Member]	Jun. 03, 2013 Guaranteed. Investment Contracts [Member] Fair Value, Inputs, Level 3 [Member]	Jun. 30, 2013 Guaranteed. Investment Contracts [Member]	Jun. 30, 2013 Mutual Stock Funds [Member] Fair Value, Inputs, Level 1 [Member]	Jun. 30, 2013 Mutual Stock Funds [Member] Fair Value, Inputs, Level 2 [Member]	Jun. 03, 2013 Mutual Stock Funds [Member] Fair Value, Inputs, Level 3 [Member]	Jun. 30, 2013 Mutual Stock Funds [Member]	Jun. 30, 2013 Equity And Index Funds [Member] Fair Value, Inputs, Level 1 [Member]	Jun. 30, 2013 Equity And Index Funds [Member] Fair Value, Inputs, Level 2 [Member]	Jun. 03, 2013 Equity And Index Funds [Member] Fair Value, Inputs, Level 3 [Member]	Jun. 30, 2013 Equity And Index Funds [Member]	Jun. 30, 2013 Fair Value, Inputs, Level 1 [Member]	Jun. 30, 2013 Fair Value, Inputs, Level 2 [Member]	Jun. 03, 2013 Fair Value, Inputs, Level 3 [Member]
Pension Plan (Details) - Pension plan assets by level within the fair value hierarchy [Line Items]
Fair Value, Pension plan assets	$ 6,337		$ 1,971		$ 1,971	$ 1,154			$ 1,154		$ 3,212		$ 3,212	$ 1,154	$ 5,183