ISSUANCE AND REPURCHASE OF COMMON STOCK	12 Months Ended
Dec. 31, 2019
Equity [Abstract]
ISSUANCE AND REPURCHASE OF COMMON STOCK	ISSUANCE AND REPURCHASE OF COMMON STOCK At-the-Market Equity Issuance Program. On November 28, 2016, we filed with the SEC a prospectus supplement to our October 2016 shelf registration statement on Form S-3 (the “Shelf Registration Statement”), under which we could have sold up to $150.0 million of our common stock through an “at-the-market” equity offering program (the “ATM Program”). The ATM Program was implemented through a related sales agreement (the “Sales Agreement”) with the agents named therein. Through December 31, 2016, we sold 167,931 shares of common stock under the ATM Program. The net proceeds from such sales were $6.0 million after deducting the aggregate commissions paid of approximately $0.1 million and were used to reduce outstanding indebtedness. No shares of common stock were sold under the ATM Program during 2017. On July 31, 2017, we terminated the ATM Program, without penalty, by delivering notice to the agents under the Sales Agreement. In connection with the filing of the Shelf Registration Statement and the commencement of the ATM Program, we capitalized costs totaling $0.7 million, substantially all of which was written off to selling, general and administrative expense in 2017 after the cancellation of the ATM Program. Common Stock Repurchase Plan. On June 23, 2014, our Board authorized an increase in the stock repurchase plan limit to $50.0 million (less $13.3 million repurchased previously). During year ended May 31, 2015, we repurchased 546,977 shares for a total cost of $21.1 million. During the year ended December 31, 2016, we repurchased 274,110 shares for a total cost of $7.6 million. In the fourth quarter of 2016, these 821,087 shares were retired and are not included in common stock issued and outstanding as of December 31, 2016. The retirement of the shares resulted in a reduction in common stock of $0.2 million, a reduction of $9.1 million to additional paid-in capital, and a $19.4 million reduction to retained earnings. The stock repurchase plan was canceled in 2017. No shares were repurchased during the years ended December 31, 2019, 2018 and 2017.

ISSUANCE AND REPURCHASE OF COMMON STOCK

At-the-Market Equity Issuance Program. On November 28, 2016, we filed with the SEC a prospectus supplement to our October 2016 shelf registration statement on Form S-3 (the “Shelf Registration Statement”), under which we could have sold up to $150.0 million of our common stock through an “at-the-market” equity offering program (the “ATM Program”). The ATM Program was implemented through a related sales agreement (the “Sales Agreement”) with the agents named therein. Through December 31, 2016, we sold 167,931 shares of common stock under the ATM Program. The net proceeds from such sales were $6.0 million after deducting the aggregate commissions paid of approximately $0.1 million and were used to reduce outstanding indebtedness. No shares of common stock were sold under the ATM Program during 2017.

On July 31, 2017, we terminated the ATM Program, without penalty, by delivering notice to the agents under the Sales Agreement.

In connection with the filing of the Shelf Registration Statement and the commencement of the ATM Program, we capitalized costs totaling $0.7 million, substantially all of which was written off to selling, general and administrative expense in 2017 after the cancellation of the ATM Program.

Common Stock Repurchase Plan. On June 23, 2014, our Board authorized an increase in the stock repurchase plan limit to $50.0 million (less $13.3 million repurchased previously). During year ended May 31, 2015, we repurchased 546,977 shares for a total cost of $21.1 million. During the year ended December 31, 2016, we repurchased 274,110 shares for a total cost of $7.6 million. In the fourth quarter of 2016, these 821,087 shares were retired and are not included in common stock issued and outstanding as of December 31, 2016. The retirement of the shares resulted in a reduction in common stock of $0.2 million, a reduction of $9.1 million to additional paid-in capital, and a $19.4 million reduction to retained earnings. The stock repurchase plan was canceled in 2017. No shares were repurchased during the years ended December 31, 2019, 2018 and 2017.