Fair Value Measurements and Fair Value of Financial Instruments - Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques (Details) (Impaired loans [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Jun. 30, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable, fair value nonrecurring	$ 4,558	$ 5,460
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable, fair value nonrecurring	0	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable, fair value nonrecurring	0	0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable, fair value nonrecurring	$ 4,558	$ 5,460