v3.3.1.900
Supplemental Cash Flow Information Items - Changes in Non-cash Investing and Financing Activities (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Supplemental Cash Flow Elements [Abstract]      
Acquired property and equipment remaining unpaid $ 1,295 $ 853 $ 0
Acquired intangibles assets remaining unpaid 0 250 0
Capitalized stock-based compensation 362 79 26
Non-cash acquisitions of businesses $ 0 $ 0 $ 404