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Preferred Shares	12 Months Ended
Preferred Shares	Dec. 31, 2016
Equity [Abstract]
Preferred Shares	5. PREFERRED SHARES The Company has authorized 5.0 million shares of $0.01 par value preferred stock, of which 400,000 shares have been designated as Series A Junior Participating Preferred Stock. No such shares have been issued. See Note 13, “Rights Agreement” for information concerning a rights agreement pursuant to which shares of the Series A Junior Participating Preferred Stock may be issued.