CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares		Dec. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Preferred stock, par value (dollars per share)	[1]	$ 0.01	$ 0.01
Preferred stock, shares authorized (shares)	[1]	1,000,000	1,000,000
Preferred stock, shares issued (shares)	[1]	0	0
Common stock, par value (dollars per share)	[1]	$ 0.01	$ 0.01
Common stock, shares authorized (shares)	[1]	200,000,000	200,000,000
Common stock, shares issued (shares)	[1]	78,526,000	78,081,000
Common stock, shares outstanding (shares)	[1]	78,526,000	78,081,000

[1] On January 1, 2018, the Company adopted the ASC 606 revenue recognition standard and adjusted prior periods to conform. See "Note 2. Significant Accounting Policies" for additional information.