Acquisition, Deconsolidation and Discontinued Operations Acquisition (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2016	Apr. 20, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Cash and cash equivalents	$ 39,887	$ 5	$ 51,701	$ 86,175	$ 71,234
Other receivables		17
Prepaid expenses		5
Intangible assets, net of accumulated amortization of $6,611 and $6,009, respectively	14,865	731	14,736
Total assets	241,137	758	241,022
Deferred service fees	35,999	14	34,319
Total liabilities	192,301	$ 14	$ 190,925
Purchase price	$ 744
Executive Vice President [Member]
Business Acquisition [Line Items]
Common Stock, Shares, Issued		160