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Obligations Under Investment Agreements (Notes)
12 Months Ended
Dec. 31, 2016
Investments Schedule [Abstract]  
Obligations Under Investment Agreements
14. OBLIGATIONS UNDER INVESTMENT AGREEMENTS
As of December 31, 2016 and 2015, the carrying value of obligations under investment agreements, including unamortized discounts or premiums to principal, were $82,358 and $100,358, respectively. As of December 31, 2016 and 2015, the contractual variable interest rates for these agreements, ranged from 0.94% to 0.94% and 0.43% to 0.43%, respectively. The remaining principal amount under investment agreements is due during the year ending December 31, 2017.