Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2019

Stock-Based Compensation

Summary of the restricted stock awards activity

	Year ended December 31,
	2019			2018
		Weighted Average				Weighted Average
	Shares	Grant Price		Shares		Grant Price
Outstanding, beginning of period	2,356,418	$	9.23	1,914,570	$	16.82
Granted	2,075,455		8.41	2,116,546		7.78
Vested	(825,764)		9.84	(1,242,930)		17.08
Forfeited	(465,941)		9.01	(431,768)		13.19
Outstanding, end of period(1)	3,140,168	$	8.56	2,356,418	$	9.23

(1) The total outstanding non-vested shares of restricted stock awards granted to employees and directors are included in total outstanding shares as of December 31, 2019 and 2018.

Summary of activity in the units

	Class D
	Units
Outstanding at January 1, 2017	201,696
Vested converted to D units	(48,939)
Cancelled unvested	(152,757)
Outstanding at December 31, 2017	—