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Lease Obligations | 12 Months Ended
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Dec. 31, 2018
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Lease Obligations | L EASE O BLIGATIONS We have entered into several operating lease arrangements for office space, land, equipment and pipeline facilities. Rent expense related to these leases for 2018, 2017 and 2016 was $3.8 million, $3.6 million and $2.5 million, respectively. As of December 31, 2018, future minimum payments under our current lease agreements are as follows:
Year(s) |  | 2019 |  | 2020 |  | 2021 |  | 2022 |  | 2023 |  | Thereafter |  | Total
(in thousands) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected payments |  | $2,349 |  | $1,998 |  | $1,761 |  | $1,689 |  | $1,642 |  | $5,398 |  | $14,837
For the years ended December 31, 2018, 2017 and 2016 we paid $2.4 million ,$1.5 million and $1.5 million respectively, for capital lease arrangements related to Sandpiper's capacity, supply and operating agreement and our Mid-Atlantic propane operations' lease arrangement for property in Anne Arundel County, Maryland which it intends to purchase during the first quarter of 2019. Future minimum payments under these lease arrangements are $1.3 million in 2019.

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- Definition The entire disclosure for lessee entity's leasing arrangements including, but not limited to, all of the following: (a.) The basis on which contingent rental payments are determined, (b.) The existence and terms of renewal or purchase options and escalation clauses, (c.) Restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=77888251 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -URI http://asc.fasb.org/topic&trid=2208923 + Details
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