Registration of securities issued in business combination transactions

Consolidated Balance Sheets (Parenthetical)

v3.7.0.1
Consolidated Balance Sheets (Parenthetical) - $ / shares
Mar. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Statement of Financial Position [Abstract]      
Common stock, par value $ 0.001 $ 0.001 $ 0.001
Common stock, shares authorized 75,000,000 75,000,000 75,000,000
Common stock, shares issued 30,121,478 30,059,514 29,846,991
Common stock, shares outstanding 30,087,485 30,025,521 29,812,998