Commitments and contingencies (Tables)

12 Months Ended

Dec. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Rent Expense

Hudson utilizes leased facilities and operates equipment under non-cancelable operating leases through August 31, 2018 as follows:

Properties

Location	Annual Rent		Lease Expiration Date
Auburn, Washington	$	51,000	8/2018
Baton Rouge, Louisiana	$	15,000	4/2017
Trousdale, Tennessee	$	36,000	3/2016
Champaign, Illinois	$	457,000	12/2017
Charlotte, North Carolina	$	63,000	3/2016
Escondido, California	$	36,000	Month to Month
Hampstead, New Hampshire	$	28,000	8/2017
Nashville, Tennessee	$	162,000	3/2018
Ontario, California	$	87,000	12/2018
Pearl River, New York	$	93,000	8/2018
Pottsboro, Texas	$	9,600	8/2017
San Juan, Puerto Rico	$	151,000	11/2020
Stony Point, New York	$	117,000	6/2016
Tulsa, Oklahoma	$	27,000	12/2017

Summarized table of future commitments under operating leases

Future commitments under operating leases are summarized as follows:

Years ended December 31,	Amount
(in thousands)
-2016	$	1,297
-2017		1,085
-2018		421
-2019		165
-2020		150
Total	$	3,118