Stockholders' Equity

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Stockholders' Equity

Stockholders’ Equity

Common Stock

The following table provides a reconciliation of the beginning and ending common stock balances for the six months ended June 30, 2017 and for the year ended December 31, 2016:

	Six Months Ended June 30, 2017	Year Ended December 31, 2016
Balance, beginning of period	12,988,482	7,596,940
Issuance of common stock	—	5,175,000
Restricted stock-based awards	132,681	216,542
Balance, end of period	13,121,163	12,988,482

Universal Shelf S-3 Registration Statement

On September 13, 2016, the Company filed a registration statement on Form S-3 that allows us to offer debt or equity securities (or a combination thereof) of up to $750.0 million from time to time. The Form S-3 registration statement was declared effective as of September 26, 2016. During July 2017, the Company completed an equity offering, discussed in more detail in Note 10, and issued approximately $114.6 million in shares of its common stock under its Form S-3 registration statement, which results in approximately $635.4 million remaining to be issued under the Form S-3 registration statement.