Available-for-Sale Securities Available-for-sale (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	$ 7,965	$ 14,300
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	1
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(44)
Available-for-sale Securities, Equity & Debt Maturities, Next Rolling Twelve Months, Fair Value	1,502
Available-for-sale Securities, Equity & Debt Maturities, Rolling Year One Through Three, Fair Value	4,121
Available-for-sale Securities, Equity & Debt Maturities, Rolling After Year Three, Fair Value	2,299
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds		22,100
Available-for-sale securities, pursuit costs	1,800
Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Equity Maturities, Next Rolling Twelve Months, Fair Value	1,251
Available-for-sale Securities, Amortized Cost Basis	1,500
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax	1
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax	0
Available-for-sale Securities	1,501
Available-for-sale Securities, Equity Maturities, Rolling Year One Through Three, Fair Value	0
Available-for-sale Securities, Equity Maturities, Rolling After Year Three, Fair Value	250
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	6,465
Available-for-sale Securities	6,421
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	44
Available-for-sale Securities, Debt Maturities, Next Rolling Twelve Months, Fair Value	251
Available-for-sale Securities, Debt Maturities, Rolling Year One Through Three, Fair Value	4,121
Available-for-sale Securities, Debt Maturities, Rolling After Year Three, Fair Value	2,049
Available-for-sale Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	0	$ 7,800
Available-for-sale Securities	$ 7,922