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Retirement Plans	12 Months Ended
Retirement Plans	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Retirement Plans	Retirement Plans Our defined contribution retirement plans include a 401(k) plan, which is funded, and a supplemental plan for certain employees, which is unfunded. The expense of our defined contribution retirement plans was $1,255,000 in 2015, $1,651,000 in 2014 and $1,456,000 in 2013. The unfunded liability for our supplemental plan was $802,000 at year-end 2015 and $715,000 at year-end 2014 and is included in other liabilities.