Common Stock	12 Months Ended
Dec. 31, 2017
Common Stock [Abstract]
Common stock offering [Text Block]	COMMON STOCK On February 8, 2017, the Company announced that its Board of Directors authorized a stock repurchase program, under which the Company may repurchase up to $30,000 of its common stock under the program for a period of 12 months. Under this program, the Company is authorized to repurchase its issued and outstanding common shares from time to time in open-market and privately negotiated transactions and block trades in accordance with federal securities laws. The stock repurchase program expired on February 8, 2018. During the year ended December 31, 2017, the Company repurchased 412 shares of its common stock for a total of $7,288. On November 4, 2015 and February 9, 2016, the Company announced that its Board of Directors authorized two stock repurchase programs, under which the Company could repurchase up to $15,000 of its common stock under each program for a period of 12 months. During the first quarter of 2016, the Company repurchased 1,452 shares of its common stock for a total of $30,000 and these repurchase programs expired upon the repurchase of the full authorized amount under such plans.

COMMON STOCK

On February 8, 2017, the Company announced that its Board of Directors authorized a stock repurchase program, under which the Company may repurchase up to $30,000 of its common stock under the program for a period of 12 months. Under this program, the Company is authorized to repurchase its issued and outstanding common shares from time to time in open-market and privately negotiated transactions and block trades in accordance with federal securities laws. The stock repurchase program expired on February 8, 2018. During the year ended December 31, 2017, the Company repurchased 412 shares of its common stock for a total of $7,288.

On November 4, 2015 and February 9, 2016, the Company announced that its Board of Directors authorized two stock repurchase programs, under which the Company could repurchase up to $15,000 of its common stock under each program for a period of 12 months. During the first quarter of 2016, the Company repurchased 1,452 shares of its common stock for a total of $30,000 and these repurchase programs expired upon the repurchase of the full authorized amount under such plans.