Investment Securities (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Cost	$ 3,407	$ 4,415
Gross Unrealized Gains	156	256
Gross Unrealized Losses	0	(12)
Fair Value	$ 3,563	4,659
Preferred Shares
Schedule of Available-for-sale Securities [Line Items]
Period from issuance when investments become redeemable	5 years
Redeemable Preferred Stock
Schedule of Available-for-sale Securities [Line Items]
Cost	$ 238	1,288
Gross Unrealized Gains	15	21
Gross Unrealized Losses	0	(12)
Fair Value	253	1,297
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Cost	3,169	3,127
Gross Unrealized Gains	141	235
Gross Unrealized Losses	0	0
Fair Value	$ 3,310	$ 3,362