Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill at December 31, 2017 and 2016, and the changes in the balance for the years then ended are as follows:



	2017		2016
Balance, beginning of year	$	487,834	482,905
Increase in goodwill due to acquisition ⁽¹⁾	—		4,929
Balance, end of year	$	487,834	487,834

Schedule of Intangible Assets

Intangible assets at December 31, 2017 and 2016, and the changes in the balance for the years then ended are as follows:



	2017			2016
Balance, beginning of year	$	2,496		—
Increase in intangibles due to acquisition ⁽¹⁾	—			2,872
Amortization	(410		)	(376	)
Balance, end of year	$	2,086		2,496

⁽¹⁾ The increase in goodwill and intangible assets relates to the acquisition of a Field Marketing Office (FMO). See note 19 for further details regarding the acquisition.

Schedule of Finite-Lived Intangible Assets Future Amortization Expense

The net amortization of the intangible assets in each of the next five years is as follows:



2018	$	410
2019	410
2020	410
2021	410
2022	410
2023 and beyond	36
Total	$	2,086