Commitments and contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Rent Expense

Hudson utilizes leased facilities and operates equipment under non-cancelable operating leases through August 31, 2022 as follows:

Properties

			Lease Expiration
Location	Annual Rent		Date
Auburn, Washington	$	39,000	8/2018
Baton Rouge, Louisiana	$	23,000	5/2019
Champaign, Illinois	$	504,000	12/2018
Charlotte, North Carolina	$	26,000	5/2019
Escondido, California	$	36,000	Month to Month
Hampstead, New Hampshire	$	52,000	8/2022
Nashville, Tennessee	$	173,000	3/2018
Ontario, California	$	90,000	12/2018
Pearl River, New York	$	150,000	12/2021
Pottsboro, Texas	$	6,000	8/2017
Catano, Puerto Rico	$	124,000	12/2020
Stony Point, New York	$	90,000	6/2021
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)
-2017	$	1,368
-2018		1,145
-2019		464
-2020		446
-2021		253
Thereafter		35
Total	$	3,711