Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Redeemable Preferred Stock and Equity (Parenthetical)

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Consolidated Statements of Redeemable Preferred Stock and Equity (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2014
Issuance of common stock, issuance costs   $ 942
Convertible notes conversion feature, taxes   5,082
Convertible notes conversion features, issuance costs   886
Purchase of remaining interest in VIE, taxes   $ 300
Partial termination of capped call options, tax impact $ 116  
Convertible debt extinguishment impact, tax impact $ 2,144  
Treasury Stock    
Conversion of restricted stock units to common stock, treasury shares purchased (in shares) 69,307 54,252