Schedule II - Valuation And Qualifying Accounts

12 Months Ended

Dec. 31, 2019

Valuation and Qualifying Accounts [Abstract]

Schedule II - Valuation And Qualifying Accounts

ORION GROUP HOLDINGS, INC.

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

(Dollars in thousands)

	Balance at the		Charged to				Balance at the
	Beginning of		Revenue, Cost				End of
Description	the Period		or Expense		Deduction		the Period
Year ended December 31, 2017
Provision for doubtful accounts	$	—	$	—	$	—	$	—
Reserve for losses on uncompleted contracts	$	—	$	—	$	—	$	—
Year ended December 31, 2018
Provision for doubtful accounts	$	—	$	4,280	$	—	$	4,280
Reserve for losses on uncompleted contracts	$	—	$	22,770	$	—	$	22,770
Year ended December 31, 2019
Provision for doubtful accounts	$	4,280	$	—	$	1,680	$	2,600
Reserve for losses on uncompleted contracts	$	22,770	$	2,455	$	14,300	$	10,925