Earnings (Loss) Per Share Attributable to Stockholders (Tables)

9 Months Ended

Sep. 30, 2016

Earnings (Loss) Per Share Attributable to Stockholders [Abstract]

Computation of Basic and Diluted Earnings Per Share

	Three months ended					Nine months ended
	September 30, 2016					September 30, 2016
		Net loss	WA				Net income	WA
		attributable to	number		Per share		attributable to	number		Per share
		stockholders	of shares		amount		stockholders	of shares		amount
Basic	$	(5,137)	106,622,376	$	(0.05)	$	63,979	106,595,088	$	0.60
Effect of dilutive securities:
PSUs		-	81,610		-		-	27,203		-
Stock options		-	821,065		-		-	599,099		-
Diluted	$	(5,137)	107,525,051	$	(0.05)	$	63,979	107,221,390	$	0.60

	Three months ended					Nine months ended
	September 30, 2015					September 30, 2015
		Net income	WA				Net income	WA
		attributable to	number		Per share		attributable to	number		Per share
		stockholders	of shares		amount		stockholders	of shares		amount
Basic	$	20,825	107,137,417	$	0.19	$	89,685	107,041,819	$	0.84
Effect of dilutive securities:
Stock options		-	380,471		-		-	391,540		(0.01)
Diluted	$	20,825	107,517,888	$	0.19	$	89,685	107,433,359	$	0.83