Investments is Low Income Housing Tax Credits Investments in Qualified Affordable Housing Projects (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2013
Investments in Low Income Housing Tax Credits [Abstract]
Original investment value	$ 29,543	$ 29,543
Current recorded investment	26,305	26,305
Capital commitment relating to Low Income Housing Project investments		22,273	0
Tax credits and benefits (1)	1,557
Amortization of investments (2)	1,098
Net income tax benefit (3)	$ 459