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Earnings (Loss) Per Share Earnings (Loss) Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Calculations of net income per share of common stock        
Net income attributable to Chart Industries, Inc. $ 2,783 $ 21,153 $ (129) $ 16,502
Basic $ 0.09 $ 0.69 $ 0.00 $ 0.54
Diluted $ 0.09 $ 0.68 $ 0.00 [1] $ 0.53
Weighted average number of common shares outstanding — basic 30,727 30,582 30,711 30,575
Incremental Common Shares Attributable to Share-based Payment Arrangements 553 357 0 [1] 329
Weighted average number of common shares outstanding – diluted 31,280 30,939 30,711 30,904
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 4,063 3,893 5,105 4,131
Stock Compensation Plan [Member]        
Calculations of net income per share of common stock        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 695 525 1,737 763
Warrant [Member]        
Calculations of net income per share of common stock        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 3,368 3,368 3,368 3,368
[1] Zero incremental shares from share-based awards are included in the computation of diluted net loss per share for periods in which a net loss occurs because to do so would be anti-dilutive.