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Revenues
 6 Months Ended
Jun. 30, 2021
Revenues [Abstract]  
Revenues

(3)      Revenues

 

The following table sets forth the Company’s revenues by major source (in thousands):

 

 

 

Three months ended June 30,

 

 

Six months ended June 30,

 

 

 

2021

 

 

2020

 

 

2021

 

 

2020

 

Marine transportation segment:

 

 

 

 

 

 

 

 

 

 

 

 

Inland transportation

 

$

253,588

 

 

$

303,012

 

 

$

478,039

 

 

$

621,577

 

Coastal transportation

 

 

79,299

 

 

 

77,975

 

 

 

155,799

 

 

 

162,667

 

 

$

332,887

 

 

$

380,987

 

 

$

633,838

 

 

$

784,244

 

Distribution and services segment:

 

 

 

 

 

 

 

 

 

 

 

 

Commercial and industrial

 

$

140,966

 

 

$

129,548

 

 

$

273,874

 

 

$

291,539

 

Oil and gas

 

 

85,771

 

 

 

30,624

 

 

 

148,762

 

 

 

109,302

 

 

 

$

226,737

 

 

$

160,172

 

 

$

422,636

 

 

$

400,841

 

 

Contract liabilities represent advance consideration received from customers, and are recognized as revenue over time as the related performance obligation is satisfied. Revenues recognized during the six months ended June 30, 2021 and 2020 that were included in the opening contract liability balances were $39,181,000 and $33,693,000, respectively. The Company presents all contract liabilities within the deferred revenues financial statement caption on the balance sheets. The Company did not have any contract assets at June 30, 2021 or December 31, 2020. The Company applies the practical expedient that allows non-disclosure of information about remaining performance obligations that have original expected durations of one year or less.