Summary of Significant Accounting Policies (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average common shares outstanding for basic earnings (loss) per share	93,384,000	84,685,000	90,016,000	80,481,000
Dilutive effect of options, restricted stock units and preferred shares	340,000	0	0	0
Diluted weighted average common shares outstanding	93,724,000	84,685,000	90,016,000	80,481,000
Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from earnings per share calculations because their effects would be anti-dilutive	2,900,000	2,500,000	2,900,000	2,400,000
Restricted Stock Units (RSUs)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from earnings per share calculations because their effects would be anti-dilutive	100,000	100,000	100,000	100,000
Restricted Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from earnings per share calculations because their effects would be anti-dilutive	1,000,000	700,000	1,000,000	800,000
Preferred Shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from earnings per share calculations because their effects would be anti-dilutive		0		1,500,000