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Share Repurchase Plan	9 Months Ended
Share Repurchase Plan	Sep. 30, 2018
Equity [Abstract]
Share Repurchase Plan	Share Repurchase Plan In May 2016, the Company's Board of Directors authorized the Company to repurchase, on the open market, shares of its outstanding common stock in an amount not to exceed $30.0 million in aggregate. Purchases of the Company's common stock may be made in open market transactions effected through a broker-dealer at prevailing market prices, in block trades, or by other means in accordance with Rules 10b-18 and 10b5-1 under the Securities Exchange Act of 1934. The share repurchase program does not obligate the Company to repurchase any particular amount of common stock, and has no fixed termination date. Under this program, the Company has repurchased 305,183 shares of common stock through September 30, 2018 at an average price of $24.43 per share, resulting in $7.5 million in program-to-date purchases. No shares were repurchased during the nine months ended September 30, 2018 and 2017.