SCHEDULE II - FINANCIAL INFORMATION OF REGISTRANT- PARENT COMPANY ONLY - Balance Sheets Additional Information - Parent Company Only (Details) - $ / shares |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|---|---|---|---|
| Condensed Balance Sheet Statements, Captions [Line Items] | |||
| Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01 | $ 0.01 |
| Common stock, issued (in shares) | 68,358,074 | 66,318,849 | |
| Common stock, outstanding (in shares) | 68,358,074 | 66,318,849 | |
| Common stock, authorized (in shares) | 250,000,000 | 250,000,000 | |
| Parent | |||
| Condensed Balance Sheet Statements, Captions [Line Items] | |||
| Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01 | |
| Common stock, issued (in shares) | 68,358,074 | 68,358,074 | |
| Common stock, outstanding (in shares) | 66,318,849 | 66,318,849 | |
| Common stock, authorized (in shares) | 250,000,000 | 250,000,000 |