Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands |
Total |
Class A |
Class B |
Common Stock
Class A
|
Common Stock
Class B
|
Additional Paid-in Capital |
Accumulated Other Comprehensive Income |
Accumulated Losses / Retained Earnings |
Total Partners'/Stockholders’ Equity (Deficit) |
Non-controlling Interest |
|---|---|---|---|---|---|---|---|---|---|---|
| Beginning Balance (shares) at Dec. 31, 2016 | 98,250,917 | 31,704,988 | ||||||||
| Beginning Balance at Dec. 31, 2016 | $ 10 | $ 3 | $ 912,824 | $ (15,618) | $ 897,219 | $ 334,192 | ||||
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||||||
| Comprehensive income | $ 24,199 | 15,832 | 15,832 | (8,367) | ||||||
| Share‑based compensation (shares) | 435,000 | |||||||||
| Share-based compensation | 521 | 521 | 0 | |||||||
| Ending Balance (shares) at Mar. 31, 2017 | 98,685,917.000 | 31,704,988.000 | ||||||||
| Ending Balance at Mar. 31, 2017 | $ 10 | $ 3 | 913,345 | 214 | 913,572 | 342,559 | ||||
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||||||
| Adoption of new accounting standards, net of income taxes of $83 | $ 7 | 191 | 198 | 85 | ||||||
| Beginning Balance (shares) at Dec. 31, 2017 | 99,791,245 | 30,319,564 | 99,791,245 | 30,319,564 | ||||||
| Beginning Balance at Dec. 31, 2017 | $ 10 | $ 3 | 920,723 | 1,318 | 208,279 | 1,130,333 | 342,240 | |||
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||||||
| Comprehensive income | $ 32,254 | 2,082 | 23,841 | 25,923 | 6,331 | |||||
| Share‑based compensation (shares) | 59,989 | |||||||||
| Share-based compensation | 1,721 | 1,721 | ||||||||
| Exchanges (shares) | 64,380 | (64,380) | ||||||||
| Exchanges | 1,033 | 1,033 | (1,033) | |||||||
| Distributions | (4,153) | |||||||||
| Payment of taxes for employee stock awards | (407) | (407) | ||||||||
| Tax receivable agreement arising from exchanges, net of income taxes of $50 | (350) | (350) | ||||||||
| Ending Balance (shares) at Mar. 31, 2018 | 99,915,614 | 30,255,184 | 99,915,614.000 | 30,255,184 | ||||||
| Ending Balance at Mar. 31, 2018 | $ 10 | $ 3 | $ 922,720 | $ 3,407 | $ 232,311 | $ 1,158,451 | $ 343,470 |