Share-Based Compensation - Narrative (Details) (USD $)	9 Months Ended			0 Months Ended		3 Months Ended		9 Months Ended					3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2013	Dec. 05, 2013 2007 Amended and Restated Long-term Incentive Plan	Dec. 03, 2013 2007 Amended and Restated Long-term Incentive Plan	Mar. 31, 2014 Non-qualified Stock Options with Time-based Vesting (NQO) [Member] 2007 Amended and Restated Long-term Incentive Plan	Mar. 31, 2013 Non-qualified Stock Options with Time-based Vesting (NQO) [Member] 2007 Amended and Restated Long-term Incentive Plan	Mar. 31, 2014 Non-qualified Stock Options with Time-based Vesting (NQO) [Member] 2007 Amended and Restated Long-term Incentive Plan	Mar. 31, 2013 Non-qualified Stock Options with Time-based Vesting (NQO) [Member] 2007 Amended and Restated Long-term Incentive Plan	Mar. 31, 2014 Non-qualified Stock Options with Performance-based and Time-based Vesting (PNQ) [Member]	Mar. 31, 2014 Non-qualified Stock Options with Performance-based and Time-based Vesting (PNQ) [Member] 2007 Amended and Restated Long-term Incentive Plan	Mar. 31, 2013 Non-qualified Stock Options with Performance-based and Time-based Vesting (PNQ) [Member] 2007 Amended and Restated Long-term Incentive Plan	Mar. 31, 2014 Restricted Stock	Mar. 31, 2013 Restricted Stock	Mar. 31, 2014 Restricted Stock	Mar. 31, 2013 Restricted Stock
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Common Stock, Par or Stated Value Per Share	$ 1		$ 1	$ 1.00
Common stock authorized for future issuance				1,375,000	1,125,000
Increase in the number of shares authorized for issuance, if approved				250,000
Award vesting period								3 years			3 years				3 years
Estimated annual forfeiture rate										6.50%
Closing stock price	$ 19.70
Fair value of options vested								$ 500,000
Proceeds from stock option exercises	1,441,000	1,195,000
Unrecognized compensation cost						800,000	1,300,000	800,000	1,300,000		1,000,000
Allocated Share-based Compensation Expense						100,000	200,000	500,000	700,000		0	0	100,000	100,000	400,000	500,000
Restricted stock granted															9,200	45,230
Restricted stock, Granted, Weighted Average Grant Date Fair Value															$ 20.48	$ 11.42
Unrecognized compensation cost related to restricted stock													700,000	1,000,000	700,000	1,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized For Issuance, Per Participant, Per Year				75,000	250,000
Share-based Compensation Arrangement by Share-based Payment Award, Value of Awards Authorized for Grant, Per Participant, Per Year				$ 30,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross								1,927			109,448
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price								$ 18.68			$ 21.32