Lease Commitments (Tables)

12 Months Ended

Dec. 31, 2016

Leases [Abstract]

Schedule of future minimum lease payments

The following is a schedule of future minimum lease payments including real estate taxes as required under the above operating leases, as well as the remaining lease payments under capital leases as referenced below:

Year ending December 31:	Operating Leases			Capital Leases
2017	$	698			58
2018		700			45
2019		691			34
2020		589			18
2021		554			15
Thereafter		1,289			—
Total minimum payments required:	$	4,521	*	$	170	*

* After paying $60 to retire a capital lease during January 2017, the remaining payments under capital leases include principal of $147 and interest of $23. Also, includes future payments of the Burr Ridge Building Lease executed March 2017 as described above.