Reserves for unpaid losses and loss adjustment expenses (Tables)

12 Months Ended

Dec. 31, 2017

Liability for Unpaid Claims and Claims Adjustment Expense, Activity in Liability [Abstract]

Unpaid Losses and Loss Adjustment Expenses

The following table presents a reconciliation of consolidated beginning and ending reserves for unpaid losses and loss adjustment expenses:

	December 31,
	2017			2016			2015
	(in thousands)
Net reserves for unpaid losses and loss adjustment expenses, beginning of year	$	194,602		$	124,126		$	91,970
Commutation of MLQS:
2016 MLQS	—			9,109			—
2015 MLQS	27,929			—			—
2014 MLQS	—			24,296			—
2012 MLQS	—			—			8,587
	27,929			33,405			8,587
Adjusted net reserves for losses and loss adjustment expenses	222,531			157,531			100,557
Incurred losses and loss adjustment expenses:
Current year	114,960			83,675			51,434
Prior year	(11,280		)	(12,714		)	(9,196		)
Total net losses and loss adjustment expenses incurred	103,680			70,961			42,238
Payments:
Current year	13,792			5,494			2,226
Prior year	44,926			28,396			16,443
Total payments	58,718			33,890			18,669
Net reserves for unpaid losses and loss adjustment expenses, end of year	267,493			194,602			124,126
Reinsurance recoverable on unpaid losses	48,224			70,199			95,503
Gross reserves for unpaid losses and loss adjustment expenses, end of year	$	315,717		$	264,801		$	219,629